I assume you had an Acer if you had that extra set of levels, as that's how I first met Jazz Jackrabbit. But I too, digress. That OEM version is a beta... not Shareware by any means. But there are some differences between it and Jazz 2 1.20 and up. In fact there's an article about it.

http://www.jazz2online.com/J2Ov2/art...?articleID=206